baber/WOPTO huggingface dataset:
Patent GB-347214-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H35/34
Filed: 1930-01-20
Abstract: 347,214. Actuation of switches. SMITH, F. A., Brasted Motor Works, Brasted, Kent. Jan. 20, 1930, No. 1993. [Class 38 (v).] Pneumatic actuation.-A switch adapted to remain closed while an internal - combustion engine is running, comprises a chamber 10 connected by a tube 19 with the induction pipe of the engine and a diaphragm 15 forming one boundary of the chamber 10 and communicating on its other side with a chamber 11 in communication with the atmosphere through a small hole 25. When the pressure in the chamber 10 falls due to the engine running the diaphragm 15 rises and a stud on it presses together two contact springs 20, 21 which move over each other with a sliding action. When the engine stops, the parts return slowly to their original position, the time depending on the rate of expulsion of air through the hole 25. In a modification (Fig. 2, not shown) the chamber 11 has, in addition to a small hole, a one-way valve allowing a quick closing movement of the switch. The Provisional Specification describes modifications in which the diaphragm is replaced by a piston or bellows.
Patent GB-990523-A (GB)
Title: Improvements in and relating to low carbohydrate foodstuffs
IPC: A23L7/109
Filed: 1962-01-19
Abstract: In making goods such as bread and biscuits and farinacei, e.g macaroni, spaghetti and noodles, a flour dough is made containing at least 20%, based on the weight of the flour, of casein, which dough is of pH 5.1-5.7, the dough is shaped, and for baked goods, is baked, and, for farinacei, is dried.  Up to 123% of casein may be used.  The pH adjustment may be made with potassium bicarbonate and aluminium hydroxide mixture, potassium bicarbonate and calcium carbonate mixture, citric acid.  The flour-casein mixtures may be salted with potassium chloride-sodium chloride mixtures.  Eggs or egg powder may be incorporated.
Patent GB-1485565-A (GB)
Title: Low-flammability or self-extinguishing plastic or plastic-elastic compositions
IPC: C08L23/20
Filed: 1975-01-17
Abstract: 1485565 Low-flammability compositions CHEMISCHE WERKE HULS AG 17 Jan 1975 [18 Jan 1974] 2064/75 Addition to 1453107 Heading C3P Low-flammability or self-extinguishing plastic and plastic compositions comprise by weight (1) 7 to 50% of largely amorphous polyolefin having an RSV value of 0À2 to 2À5 dl./g. or mixture of 1 part thereof with up to 2 parts of an elastomer, (2) 10 to 40% of a polybutene oil or mixture of 1 part thereof with up to 0À3 part of a drying oil, (3) 3 to 30% of a chlorinated paraffin, (4) 30 to 70% of a filler and optionally (5) 0À5 to 5% of antimony trioxide, said largely amorphous polyolefin being polypropylene having a fraction soluble in boiling heptane of more than 80%, polyhexene-1, a copolymer of propylene with ethylene and/or butene-1 and/or hexene-1 or a mixture of any of these polymers with polybutene-1. The elastomer may be natural, polyolefin, butadiene/styrene, butadiene/acrylonitrile, butyl, polybutadiene or polyisoprene rubber. The polybutene oil may be prepared by Friedel-Crafts polymerization of C 4  cuts containing butene-1, butene-2 and optionally isobutylene and butadiene; and the drying oil may be a polybutadiene oil or triglyceride, optionally with cobalt octoate or naphthenate as drier. The chlorinated paraffin may contain 45 to 58 weight per cent of chlorine. The filler may be silica or a silicate, sulphate or phosphate, optionally together with ferric oxide or carbon black. The compositions may be used as mastics, jointing and adhesive tapes, and in building, pipe-laying, car manufacture and bonding plastic articles.
Patent GB-673196-A (GB)
Title: Improvements in or relating to the preparation of silica sols
IPC: C01B33/141
Filed: 1950-01-27
Abstract: Stable silica aquasols containing large colloidal silica particles, e.g. of 300-800 millimicrons, are prepared by subjecting a thixotropic agglomerate of colloidal silica, if desired with the addition of water or an alkaline material, to intense shearing action, as for example, in a colloid mill.  The thixotropic agglomerate is obtained by heating silica aquasols, aquagels or mixtures thereof under conditions preventing loss of water and in the presence of an amount of a free basic compound, e.g. the hydroxides, carbonates or silicates of the alkali metals or quaternary ammonium hydroxides, sufficient to cause solidification to a mud.  The silica aquasols employed in preparing the mud may be prepared by any of the usual methods, several of which are described, and should be alkaline reacting. The aquasols are suitable for impregnating paper, textiles and leather and for coating moulds.  Specification 649,897 is referred to.
Patent GB-683061-A (GB)
Title: Improvements relating to thermionic valves utilising secondary electron emission amplification
Inventor: ATHERTON ALBERT HORACE
IPC: H01J43/02
Filed: 1948-01-24
Abstract: 683,061. Electron discharge tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Jan. 1, 1949 [Jan. 24, 1948], 2190/48. Class 39(i) A valve comprises a thermionic cathode 1 and a secondaryelectron emitting cathode 7 and between them, a control electrode 3 and an electroncollecting electrode 8, the primary electrons being formed into a beam by a beam-forming means 6, 13 so that they flow on a rectilinear path 23 to bombard the cathode 7 and the cathode 7 is coated with a 10<SP>-4</SP> inch thick composition of 20 to 50 per cent alkaline earth oxide. The coating is a mixture with a refractory oxide of preferably barium oxide with magnesium oxide as described in Specifications 670,554 and 670,582. The electrodes 3, 8 are pervious to electrons, and accelerating and suppressor grids 4, 5 may also be provided between the cathodes 1, 7. The beam-forming plates 6 are curved and provided with inturned extensions 13; and the electron beam impinges on the secondary cathodes with a density of 5 mA per cm<SP>2</SP> of emitting surface 11. The valve may be used in an amplifier circuit (Fig. 2, not shown) the potential of the plates 6 being that of the cathode 1, and the input signal is applied to electrode 3, with an accelerating potential on the grid 4, the load being in the anode-to-secondarycathode circuit. During the manufacture of the valve the cathodes 1, 7 are raised together to the same final temperature for a short time to prevent matter from cathode 1 contaminating cathode 7 which may be heated by embedded heaters 25. Although the surfaces 11 of the cathodes 7 are planar they may be convex to the cathode 1. Specification 601,966 is referred to. According to the Provisional Specification the secondary cathodes 7 operate at a temperature between 400‹C and 500‹C, as described in Specification 682,153.
Patent GB-1490394-A (GB)
Title: Heat exchange apparatus
IPC: F28C3/06
Filed: 1975-01-20
Abstract: 1490394 Filter apparatus BALTIMORE AIRCOIL CO Ltd 20 Jan 1975 [6 March 1974] 2306/75 Heading BID [Also in Division F4] In an evaporative heat exchange apparatus for cooling liquid and in which the liquid is contacted with gas, the liquid after being separated from the gas is passed horizontally through an inclined filter, the upper end of which is upstream of the lower end thereof. In Fig. 1 liquid (e.g. water) from nozzles 24 is contacted in conduit 10 with air drawn in through inlet end 12 the cooled liquid is separated from the air by corrugated strips 28 and passed to sump 42 where solids settle out at 79 and where it passes through inclined strainer 54 slidably mounted in channels 52, to outlet 68 and the air is discharged through vanes 44. The inlet end of conduit 10 is provided with corrugated strips 26 for intercepting liquid thrown back from the nozzles 24. Tapered plate 72 serves to maintain an even flow of liquid through the strainer 54. In Fig. 4 {not shown) in a circulating heat exchanger system, water is passed downwardly through corrugated plates counter current to a gas stream, the cooled water is filtered through an inclined filter (114) and after being used as a coolant is recirculated to the heat exchanger (81). When recirculation is stopped the filter is cleaned by black flushing due to the difference in levels downstream and upstream of the filter.
Patent GB-515509-A (GB)
Title: Improvements in or relating to apparatus for cleaning potatoes
IPC: A47J25/00
Filed: 1939-01-24
Abstract: 515,509. Dressing vegetables. HARWOOD, H. A. G. Jan. 24, 1939, No. 2363. [Class 28(ii)] [Also in Group XXII] Apparatus for cleaning potatoes comprises an eye-removing drill h<1>, a rotatable skinremoving scraper j<1> and a rotatable cutter h for removing unripe or bad parts, all being driven from a common source of power, e.g. an electric motor a. The.apparatus is mounted in a box k having a lid kl, the,front wall being provided with slots k<4> through which the tools project. The front wall is provided with projections l, l<1>, l<2> to shield the hand of the operator from the rotating tools, and to facilitate presentation of the potato to the tools.
Patent GB-100437-A (GB)
Title: Improvements in Block Printing Machines.
Inventor: PRIFOLD GEORGE
IPC: B41F1/10
Filed: 1916-02-18
Abstract: 100,437. Prifold, G. May 13, 1915, [Convention date]. Platen machines; tripping-arrangements.-Block machines for printing oilcloth, linoleum, &c., particularly bordered rugs or mats, in which the blocks on vertical carriers operated by transverse cam shafts are prevented from making the impressions when required by latches, are provided with means for operating the latches, comprising mutilated gear-wheels between the latches and a controlling- shaft. In the machine partly shown in Fig. 2, the blocks 6 are on vertical carriers 4 having rollers 10 operated by the cams 9 on transverse shafts 7. The fabric to be printed is fed intermittently under the blocks by bands 12, and the blocks are inked when in raised position by the apparatus 11. Latches 14 weighted at 18 engage lugs 16 on the carriers 4 to prevent the descent of the carrier and block unless the latch is disengaged at the proper time. The latches are on shafts 15 provided with gears 19 co-operating with multilated gears 21 on one or more controlling-shafts 20 driven continuously from a shaft 24. The mutilated gears are positioned on the shafts 20 so as to disengage the latches at the times required by the pattern. In a modification, Fig. 5, the latch shafts 15<a> are provided with toothed gears or segments 19<a> engaging racks adjustable on sliding rods 20<a> operated in one direction by mutilated gears 23<a> on a shaft geared to a shaft 24<a>, and in the return direction by springs 27.
Patent GB-122919-A (GB)
Title: Improvements in Splash Preventers or Filters for Taps.
Inventor: DEWHURST JOHN
IPC: E03C1/086
Filed: 1918-02-12
Abstract: 122,919. Dewhurst, J. Feb. 12, 1918. Filters and strainers, applications of. - A splash-preventer or filter for detachably securing to the outlet of a tap has an india-rubber ferrule 2 with a flange 2a gripped between a nozzle 5 having a gauze strainer 4 and a body part 3 and adapted to be pressed against the outlet of the tap by a set-screw 6. A bearing plate may be introduced between the ferrule and the set screw. In a modification, the part 3<a> is slotted to form spring fingers adapted to be compressed by an encircling clamping band.
Patent GB-1025975-A (GB)
Title: Method for the production of polyelectrolyte-sulphuric acid sols
IPC: H01M10/10
Filed: 1963-01-21
Abstract: A sulphuric acid sol for use as an electrolyte in lead accumulators is prepared by adding a dry mixture of a "polyelectrolyte" and SiO2, of surface area greater than 100 m2/g., with stirring, to sulphuric acid of the concentration used in accumulators.  A "polyelectrolyte" is a polymeric organic acid, base, or ampholyte containing ionic groups, e.g. carboxyl-sulphonic acid- or amino-groups, and may be natural, e.g. alginates or pectinates; or synthetic, e.g. polyacrylates, polystyrene sulphonates, or carboxymethyl cellulose. The dry mixture, which may contain 5-20 wt. per cent SiO2, preferably constitutes up to 5 vol. per cent of the sol.  A stirrer operating at 200-600 r.p.m. may be used.  The sol is introduced into the accumulator and solidifies to form a gel.
Patent GB-1041341-A (GB)
Title: Organosilicon compositions
IPC: C09K23/54
Filed: 1963-01-22
Abstract: An emulsifiable mixture comprises water, a substantially water-insoluble liquid hydrocarbon, and an organosiloxane-oxyalkylene block copolymer comprising (a) at least one block of at least 2 units of the formula RbSiO <FORM:1041341/C3/1> wherein R is a monovalent saturated or unsaturated hydrocarbon (h.c.), halo-h.c. or divalent h.c. radical and b is 1, 2 or 3, the siloxane block containing at least one of the siloxane units in which at least one R is a divalent h.c. radical, and (b) at least one block containing at least 4 oxyalkylene radicals of the formula -R1O-, wherein R1 is an alkylene radical of 2 or 3 C atoms, the siloxane and oxyalkylene blocks being interconnected by the divalent h.c. radical and being present in amounts of 5 to 50 pts. (by wt.) of siloxane blocks and 50 to 95 pts. of oxy-alkylene blocks per 100 pts. of the copolymer. The siloxane blocks may also contain units of the formula <FORM:1041341/C3/2> , wherein e is 0, 1 or 2, f is 1 or 2 and the sum e+f is 1, 2 or 3. Hydrocarbons specified are pentane, hexane, heptane, pentadecane, pentylene, hexylene, heptylene, hexadecylene, pentyne, octyne, dodecyne, cyclopentane, cyclopeptane, cyclohexylene, cyclohexadiene, benzene, toluene, xylene, ethylbenzene, kerosene, diesel fuel and lubricating oils.  The block copolymer is effectively used in amount of from 0.00001 to 75% by wt. of the total emulsifiable mixture.  In a typical example (1) a mixture of a lubricating oil, a siloxane-oxyalkylene block copolymer, distilled water and di-2-ethylhexylsebacate (as viscosity reducer), was shaken by hand to yield a stable emulsion.  Uses.-As lubricants for drawing and forming metal sheet cutting fluids and grinding fluids; and in cleaning and degreasing applications.
Patent GB-885777-A (GB)
Title: Improvements in method of preparing luminescent screens
IPC: H01J9/22
Filed: 1958-01-27
Abstract: 885,777. Luminescent screens. GENERAL ELECTRIC CO. Jan. 27, 1958 [Feb. 25, 1957], No. 2643/58. Drawings to Specification. Class 39(1) A luminescent screen is prepared by vacuum evaporating a crystalline layer of yellow emitting manganese activated phosphor of the zinccadmium sulpho-selenide group on to a transparent substrate maintained at a temperature of 225‹C. to 350‹C. The manganese may be included by evaporation of the element or a manganese compound at the same time as the phosphor host material, or the already activated phosphor may be evaporated on to the substrate. No further activation of the crystalline layer is necessary. Instead of evaporating the crystalline layer directly on to a substrate, it may be formed on a previously deposited crystalline or granular layer of activated phosphor that emits visible light other than in the range from 0.530 to 0. 640 microns to produce a screen of the penetron type for use in cathode ray tubes. A screen so formed with a thin crystalline layer may be used with low electron energies without the graininess inherent in multilayer granular screens, and the low temperature employed eliminates diffusion of the activators between phosphor layers as well as permitting the use of a soft glass substrate. The manganese activator can be elemental manganese or a manganese halide and can be from 0.001 to 0.1% by weight of the phosphor host material. The phosphor underlying the yellow emitting manganese activated phosphor can comprise a red, green or blue emitting phosphor of the zinc-cadmium sulpho-selenide group (various proportions of zinc to cadmium given) activated by given percentage ranges by weight of silver or copper, of self-activated zinc oxide, zinc silicate activated with 0.01 to 2.00% by weight of manganese, or of zinc phosphate activated with 0.01 to 1.00% by weight of manganese. The above phosphors can be deposited on the substrate by vapour reaction methods (substrate maintained at 550‹C. to 750‹C.) or by spraying or liquid settling (using potassium silicate in a de-ionized water solution) methods which are described. The thickness of the above phosphors can be from 1-50 microns and the thickness of the overlying yellow emitting phosphor can be from 0.25 to 10 microns, the latter phosphor preferably being coated with a thin layer of aluminium. Apparatus for the deposition of the yellow emitting phosphor is described, a thermo-couple being used for measuring the temperature of the substrate and an optical pyrometer for measuring the temperature of the evaporation boat.
Patent GB-130275-A (GB)
Title: Improvements in Locks.
Inventor: SCHROEDER FREDERICK WILLIAM
IPC: E05B63/18
Filed: 1919-02-03
Abstract: 130,275. Schroeder, F. W. Feb. 3, 1919. Night - latches; latches, sliding. - In a night-latch, the follower on the inside knob is used to secure the bolt in the shot or withdrawn position. The follower j<1> acts on a plate k bent as shown and secured to the pins i of the bolt. To secure the latch bolt shot, the follower is turned past spring tongues k<6>, k<7> on the plate k into a recess k<10> of the plate. The bolt is withdrawn by the follower acting on a part k<5> of the plate k, and can be held withdrawn by turning the follower further into engagement with a projection k<1>. The lock follower is of ordinary construction acting independently of the handle on parts k<1>, k<2> of the plate k. Picking, preventing.-The striking-plate is provided with an extension, which presents the insertion of a tool between the door and the door frame.
Patent GB-673199-A (GB)
Title: Drinking trough for animals
IPC: A01K7/06
Filed: 1950-02-02
Abstract: 673,199. Valves actuated involuntarily. MARECHAL, G. Feb. 2, 1950 [Feb. 14, 1949], No. 2696/50. Class 135. A drinking trough for animals wherein a movable weight 14 in a basin 1 acts as a means for closing a water supply orifice 4 disposed above the centre of gravity of the weight and at the top of a preferably central guide 3 in a recess 13 in the weight. As shown, the animal's head presses a plate 24, removably hinged in slots 27, so that a horizontal plate 22 lifts the weight and closure member 5 through an adjustable screw 7.
Patent GB-740530-A (GB)
Title: Improvements in wide angle objectives
IPC: G02B13/04
Filed: 1954-02-01
Abstract: 740,530. Optical objectives. BERTELE, L. J. Feb. 1, 1954 [Feb. 6, 1953], No. 2971/54. Class 97 (1). In a wide-angle objective consisting of two converging components with a diaphragm therebetween and enclosed on each side by two meniscus components concave to the diaphragm, the outer components being diverging, the outer surfaces of the converging components are convex and axially separated by a distance between 0.10 F and 0.60 F, where F is the focal length of the objective. The meniscus components adjacent the central converging components may be converging or diverging. Numerical data are given for three examples of the objective shown, of which the four outer meniscus components are diverging while in the third the outermost components are diverging and the adjacent meniscus components are converging. Data are also given for an objective in which each of the central converging components is a doublet and the adjacent meniscus lens is a simple diverging lens, and for an objective in which the two outer meniscus components are each doublets, the remaining components being simple. Specification 680,185 is referred to.
Patent GB-696775-A (GB)
Title: Improvements in or relating to circular saws
Inventor: CAUDWELL PHILIP GORDON
IPC: B27B5/10
Filed: 1951-02-07
Abstract: 696,775. Circular saws. ALLEN & SONS (OXFORD), Ltd., J. Feb. 6, 1952 [Feb. 7, 1951], No. 2980/51. Class 145 (ii). A circular saw bench has buffer members disposed on each side of the saw, both to the front and to the rear, to prevent the saw blade being flexed to touch the saw table. As shown, the bench is fitted to a motor scythe 11. The saw bench is carried on the sole plate 12 and comprises a wedge-shaped frame which carries the saw 21 and the buffer members 32, 33 the latter being adjustable in supports 30, 31. The buffer members may be of wood, bone, compressed fibre or synthetic resin. The saw is driven from the gears 40 by belt 34 which can be tensioned by adjusting the screwed rod 41.
Patent GB-708679-A (GB)
Title: Improvements relating to conveyors
IPC: E21C29/16
Filed: 1952-02-06
Abstract: 708,679. Endless chain conveyers. GEWERKSCHAFT EISENHUTTE WESTFALIA. Feb. 6, 1852 [March 7, 1951], No. 3159/52. Class 78 (1) [Also in Group XXI] In a conveyer, e.g. a scraper conveyer 2, of the kind adapted to carry an extraction device, e.g. a coal planing machine 13, for use in mine working, means is provided for readily fitting the driving mechanism for the conveyer and for the planing machine at either end and at either side of the conveyer. Two plates 5 and two plates 10, each pair of which is symmetrically arranged and constructed, are secured to the side walls of the end section 4 of the conveyer. The plates 5 and the side walls are formed with apertures for the passage of driving shafts, &c. A gear box 6 is secured to either plate 5 and is coupled to the driving sprockets 3 for the chains 2. The gear box 6 is driven by the motor 7 through a hydraulic clutch 8. The motor 7 is mounted on an arm 9 bolted to a plate 10. The housing 11 for the sprocket wheels driving the planing machine chain 12 is bolted to the other plate 5: A gear box 15 is connected to the housing 11 and to a motor 16.
Patent GB-518255-A (GB)
Title: Improvements in or relating to driving gear mechanism for machines for winding paper and other strip or sheet material, cables or the like
IPC: B31C1/00
Filed: 1939-01-30
Abstract: 518,255. Winding cables &c. TAINE, R. Jan. 30, 1939, No. 3177. Convention date, Feb. 9, 1938. [Class 78 (v)] [Also in Groups IX, XVI and XXIV] Driving-mechanism for machines for winding or re-winding thick cables, pipes or the like wherein the winding is effected from a relatively small to a relatively large diameter, comprises a belt-driven casing 3, a driven shaft 9 coaxial with the casing and forming or coupled with the winding spindle of the machine and a sun-and-planet gear system within the casing having a set of three integral planet gears 5, 6, 7, the gear 6 engaging the central sun gear 14 secured to the shaft 9 and the gears 5, 7 respectively engaging corresponding sun gears 10, 11 freely mounted on the shaft 9 and secured to brake pulleys 12, 13, one arranged on either side of the casing; the gears 5, 6 may be replaced by a single wide gear meshing with the sun gear 14 and an intermediate gear engaging the gear 10. The casing 3 is driven by a belt 4 and to initiate the winding the pulley 12 is braked, whereby the wheel 14 is driven at a speed depending on the gears and the pulley 13 rotates in a direction reverse from that of the pulley 12. As the diameter of winding increases from D<1> to D<2>, the speed of the wheel 14 decreases, that of the pulley 12 increases, and that of the pulley 13 decreases to zero and then increases in the reverse direction. When this point is reached, the brake on the pulley 12 is eased and that on the pulley 13 applied as the diameter of winding increases from D<2> to D<3>; the pulley 12 continues to rotate loosely and cools. The change of direction of rotation of the pulley may be utilised to actuate a bell or other device to warn the operator that the brake on the pulley 13 is to be applied and that on the pulley 12 released or it may cause the actuation of an automatic electric or mechanical device which effects the change.